CVE-2025-34173: netgate pfsense ce Path Traversal

Vulnerability summary

CVE-2025-34173 is a medium (CVSS 5.3) Path Traversal vulnerability in netgate pfsense ce. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 59.8% of scored vulnerabilities.

Timeline

1. 09-09-2025
   PublishedVulnerability first disclosed.
2. 14-07-2026
   Last modifiedVulnerability information updated.

Description

In pfSense CE /usr/local/www/snort/snort_ip_reputation.php, the value of the iplist parameter is not sanitized of directory traversal-related characters/strings before being used to check if a file exists. While the contents of the file cannot be read, the server reveals whether a file exists, which allows an attacker to enumerate files on the target. The attacker must be authenticated with at least "WebCfg - Services: Snort package" permissions.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.